// Copyright 2021 Glass Bottom Games, all rights reserved, also all lefts reserved because Megan Fox is left-handed so it's only right, wait, oh no

#pragma once

#include "CoreMinimal.h"
#include "NavLinkCustomComponent.h"
#include "SurfaceableCustomNavLinkComponent.generated.h"

DECLARE_DYNAMIC_MULTICAST_DELEGATE_TwoParams(FSurfaceableCustomNavLinkReachedSignature, AActor*, MovingActor, const FVector&, DestinationPoint);

UCLASS(meta = (BlueprintSpawnableComponent), Classgroup = "Navigation")
class BIRDAHOY_API USurfaceableCustomNavLinkComponent : public UNavLinkCustomComponent
{
	GENERATED_BODY()

public:

#if WITH_EDITOR
	virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent) override;
#endif // WITH_EDITOR
	virtual void OnRegister() override;

	/**
	 * @brief Sets default values for this component's properties
	 * @param ObjectInitializer
	*/
	USurfaceableCustomNavLinkComponent(const FObjectInitializer& ObjectInitializer);

	UPROPERTY(BlueprintAssignable)
	FSurfaceableCustomNavLinkReachedSignature OnSmartLinkReached;

	void NotifySmartLinkReached(UNavLinkCustomComponent* LinkComp, UObject* PathingAgent, const FVector& DestPoint);

	/**
	 * @brief called when agent reaches smart link during path following, use ResumePathFollowing() to give control back
	 * @param Agent
	 * @param Destination
	*/
	UFUNCTION(BlueprintImplementableEvent)
	void ReceiveSmartLinkReached(AActor* Agent, const FVector& Destination);

	/** resume normal path following */
	UFUNCTION(BlueprintCallable, Category = SmartLink)
	void SmartLinkResumePathFollowing(AActor* Agent);

	/** check if smart link is enabled */
	UFUNCTION(BlueprintCallable, Category = SmartLink)
	bool IsSmartLinkRelevant() const;

	/** check if any agent is moving through smart link right now */
	UFUNCTION(BlueprintCallable, Category = SmartLink)
	bool SmartLinkHasMovingAgents() const;

	/**
	 * @brief	Assigns data through to the smart link, in a simplified way that BP can interact with
	 * @param relStartPoint	the relative starting point of the link
	 * @param relEndPoint	the relative ending point of the link
	 * @param bBothWays		if true, the link is traversable both ways, if false, only from start to end
	*/
	UFUNCTION(BlueprintCallable, Category = SmartLink)
	void SetSmartLinkData(FVector relStartPoint, FVector relEndPoint, bool bBothWays);

protected:


public:

	/**
	 * @brief Toggles the relevancy of this smart link
	*/
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = SmartLink)
	bool bSmartLinkIsRelevant;

protected:

};